/*
 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.truffle.object.dsl.processor.model;

import java.util.Locale;

public abstract class NameUtils {

    public static String identifierToConstant(String name) {
        final StringBuilder result = new StringBuilder();

        for (int n = 0; n < name.length(); n++) {
            if (n > 0 && Character.isUpperCase(name.charAt(n))) {
                result.append('_');
            }

            result.append(Character.toUpperCase(name.charAt(n)));
        }

        return result.toString();
    }

    public static String constantToIdentifier(String name) {
        final StringBuilder result = new StringBuilder();

        int n;

        for (n = 0; n < name.length(); n++) {
            if (name.charAt(n) == '_') {
                n++;
                result.append(Character.toUpperCase(name.charAt(n)));
            } else {
                result.append(Character.toLowerCase(name.charAt(n)));
            }
        }

        return result.toString();
    }

    public static String asGetter(String name) {
        return withPrefix("get", name);
    }

    public static String asSetter(String name) {
        return withPrefix("set", name);
    }

    public static String asCompareAndSet(String name) {
        return withPrefix("compareAndSet", name);
    }

    public static Object asGetAndSet(String name) {
        return withPrefix("getAndSet", name);
    }

    private static String withPrefix(String getSet, String name) {
        return getSet + name.substring(0, 1).toUpperCase(Locale.ENGLISH) + name.substring(1);
    }

    public static String typeWithoutParameters(String type) {
        return type.replaceAll("<\\w+(\\.\\w+)*>", "");
    }

    public static String titleToCamel(String name) {
        return Character.toLowerCase(name.charAt(0)) + name.substring(1);
    }

}
